 ;; ### `:fields`
 ;; ex.
 ;;
-;;    [1412 1413]
+;;     [1412 1413]
 (defmethod apply-form :fields [[_ field-ids]]
   (let [field-names (->> (sel :many [Field :name] :id [in (set field-ids)])
                          (map :name))]

;; ### `:order_by`
;; ex.
;;
;;    [[1416 "ascending"]
;;     [1412 "descending"]]
(defmethod apply-form :order_by [[_ field-ids]]
  (when-not (empty? field-ids)
    (let [fields (->> field-ids

                       :sum      `(aggregate (~'sum ~field) :sum)))))
                 ;; TODO - `:cum_sum` is not yet implemented (!)

;; ### `:breakout`
;; ex.
;;
;;     [1412 1413]
(defmethod apply-form :breakout [[_ field-ids]] ; TODO - not yet implemented
  (when-not (= field-ids [nil])                      ; `:breakout [nil]` is considered a valid 'empty' form
    (let [field-names (map field-id->kw field-ids)]
